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1N4739A-T50A
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Product Detailed Parameters
- Description：DIODE ZENER 9.1V 1W DO41
- Series：-
- Mfr：onsemi
- Package：Cut Tape (CT),Tape & Box (TB)
- Voltage - Zener (Nom) (Vz)：9.1 V
- Tolerance：±5%
- Power - Max：1 W
- Impedance (Max) (Zzt)：5 Ohms
- Current - Reverse Leakage @ Vr：10 µA @ 7 V
- Operating Temperature：-65°C ~ 200°C
- Mounting Type：Through Hole
- Package / Case：DO-204AL, DO-41, Axial
- Voltage - Forward (Vf) (Max) @ If：-
- Grade：-
- Qualification：-
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Overview
The onsemi 1N4739A-T50A is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 9.1 V with a tolerance of ±5%. The device operates in the through-hole DO-41-2 package and dissipates up to 1 W of power. Key electrical parameters include a maximum reverse leakage current of 10 µA at 7 V, a Zener impedance of 5 Ohms, and a test current of 28 mA. It supports an operating temperature range from -65 °C to +200 °C.
Feature Summary
- Provides stable voltage regulation via Zener breakdown characteristics
- Utilizes axial leaded glass encapsulation for through-hole mounting
- Maintains low dynamic impedance for consistent performance under varying currents
Applications
- Voltage reference circuits requiring precise potential levels
- Overvoltage protection stages in electronic systems
- Clamping applications for signal or power lines
Procurement Notes
Verify the specific suffix T50A corresponds to the Ammo Pack packaging configuration when sourcing. Confirm RoHS compliance status directly with the manufacturer documentation as regulatory requirements may vary by production batch. Ensure the DO-41-2 package dimensions match the target PCB footprint constraints before finalizing procurement decisions.
Selection Notes
Select this component when a 9.1 V regulation point is required within a through-hole design. The 1 W power rating allows for moderate current handling capabilities compared to lower-power variants. Consider the ±5% voltage tolerance against circuit sensitivity requirements. The wide thermal range supports operation in demanding environmental conditions without derating adjustments.
Part Context
This part belongs to the standard 1N47xx series of Zener diodes manufactured by onsemi. It shares core electrical specifications with other manufacturers' equivalents like Nexperia's 1N4739A,113, differing primarily in packaging format and branding. The T50A suffix specifically denotes the Ammo Pack variant, distinguishing it from bulk or reel options.
Replacement Considerations
Direct substitutes include the 1N4739A (Bulk) from onsemi and the 1N4739A,113 from Nexperia. Verify that alternative packages match the DO-41 form factor and that thermal ratings remain sufficient for the application environment.
